Subcontracting Scenario Query

How to map subcontracting process in SAP between Brazil and India (both or in SAP with different company code - Brazil created India as Subcontracting Vendor).

For Eg: one customer from US wants to send iron cube to India for making small hexagonal solids , How we would have map in this subcontracting process in SAP. shall any export/ import and customs duty have an effect in this scenario and how the India plant will receive the goods against subcontracting PO which has been created by US Plant/Co.code . if anyone would suggest the mapping process, That would be great.